1.             Preheat oven to 350°F (175°C). Grease and flour a baking pan (9×13 recommended).

2.             In a large bowl, whisk together the wet ingredients: kefir, eggs, melted butter (or oil), and vanilla        extract.

3.             In a separate bowl, whisk together the dry ingredients: flour, sugar, baking soda, baking powder, and salt.

4.             Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Do not overmix.

5.             Pour the batter into the prepared pan and spread evenly.

6.             Bake for 25-30 minutes, or until a toothpick inserted into the center comes out clean.

7.             Let the cake cool in the pan for 10 minutes, then invert onto a wire rack to cool completely.

8.             Frost generously with your favorite icing.